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You might need to purchase a replacement vent directly from GEappliances.com if the flap is too pinched to move - if you need the flap. My old microwave that came with the house did not have a vent bracket at all - it simply blew air into the cabinet space above it and ultimately out the exhaust vent - not ideal but in hindsight I didn't notice anything bad in the short 2 years the old microwave worked. My new microwave is the same as yours and I now have a working flap installed, and on windy days I can hear it slapping around. Two take-aways from that. 1. It does block outside air from back-drafting into the house (my house's vent has a screen on the outside but no flap). 2. The metal microwave flap can be noisy at times. If your house has a flap externally then you probably don't need the microwave's flap. When I installing my microwave I noticed its vent was much smaller than the large gap in the cabinet above it. Instead of somehow joining the two sizes together I used double-sided tape to attach foam insulation on top of the microwave - surrounding the microwave's exhaust and as wide as the cabinet gap - which creates a seal against the cabinet above it so exhaust from the Microwave has nowhere to go but directly through the house's exhaust vent.
Sorry, there was a problem. Please try again later.Hi there - Thanks for reaching out about this. We're sorry to hear of the trouble you're having with installing your microwave. This is not the owner experience we would want for you and we do apologize for your inconvenience. Please reach out to our parts team for additional assistance. They can be reached out 1-877-959-8688. We hope this helps. All the best. -Mikayla@GEA
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